<template>
    
    <el-container class='home_container'>
        <!-- 头部区域 -->
    <el-header>
        <div>
            <img src="../assets/heima.png">
            <span>电商后台管理系统</span>
        </div>
        <el-button type='info' @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse?'64px':'200px'">
            <div class="toggle-button" @click="toggleClass">|||</div>
            
            <el-menu background-color="#545c64" text-color="#fff" active-text-color="#409EFF" 
            unique-opened :collapse='isCollapse' :collapse-transition='false' :router='true'
            default-active='activePath'>
        <!-- 一级菜单 -->
        <el-submenu :index="item.id+' '" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
      
        <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subitem.path+''" v-for='subitem in item.children' :key="subitem.id"
        @click='saveNavState("/"+subitem.path)'>
             <!-- 二级菜单的模板 -->
         <template slot="title">
            <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subitem.authName}}</span>
        </template>
        </el-menu-item>
         
        </el-submenu>
            </el-menu>
        </el-aside>
        <!-- 右侧主体内容 -->
        <el-main>

            <!-- 路由占位符 -->
            <router-view></router-view>
        </el-main>
    </el-container>
    </el-container>
</template>
<script>
export default {
    data(){
        return{
            menulist:[],
            iconsObj:{
                '125':'iconfont icon-user',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            // 默认为不折叠
            isCollapse:false,
            // 激活的链接地址
            activePath:''

        }
    },
    created(){
        this.getMenuList()
        this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear()
            this.$router.push('/login')

        },
        async getMenuList(){
            const {data:res} = await this.$http.get('menus')
            if(res.meta.status!==200) return this.$message.error(res.meta.msg)
            this.menulist=res.data
            // console.log(res)
           
        },
        // 点击按钮,切换菜单的折叠与展开
    toggleClass(){
        this.isCollapse = !this.isCollapse
       
        
    },
    // 保存连接的激活状态
    saveNavState(activePath){
        window.sessionStorage.setItem('activePath',activePath)
        this.activePath=activePath


        }
    },
    
    
}
</script>
<style lang='less' scoped>

.home_container{
    height: 100%;
}
.el-header{
    background-color: #373D41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    color: #fff;
    align-items: center;
    font-size: 20px;
    > div{
        display: flex;
        align-items: center;
        > span{
        margin-left: 10px;
    }
        
    }
    
}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right: none;
    }
}
.el-main{
    background-color:#eaedf1 ;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4A5064;
    text-align: center;
    color: white;
    line-height: 24px;
}
</style>